“Religion is not an exact science. Sometimes, of course, neither is science.”

“Science is not interested in what stands to reason.”

“We're living in science fiction, but we don't realize it.”

“But then science is nothing but a series of questions that lead to more questions.”

“There is a phrase "neither flesh nor fowl nor good red herring." This thing was all of them, plus some other bits of beasts unknown to science or nightmare or even kebab. There was certainly some red, and a lot of flapping, and Nutt was sure he caught a glimpse of an enormous sandal...”

“[Science fiction is] out in the mainstream now. You can tell by the way mainstream literary authors pillage SF while denying they're writing it!”

“This is space. It's sometimes called the final frontier.(Except that of course you can't have a final frontier, because there'd be nothing for it to be a frontier to, but as frontiers go, it's pretty penultimate . . .)”